Wood-oil putty.



Wood-Oil Putty, of which the following is a llNlTE CARLETON ELLIS, OFLAnoHMoiv- *JvnWYRKeassrenoR T0 ELLIS-FOSTER COMPANY,

A conronarr'on on NEW JEns-EY.

woo eacurr No Drawing.

Specification of Letters Patent. Patented June 18, 1912, Applicationfiled November 16, 1907. Serial No. 402,513.

To all whom, z't'mag concern:

Be it known that I, CARLnToN ELLIS, a citizen of the United States,residing at Larchmont, in the county of W'estchester and State of NewYork, have invented certain new and useful Improvements inspecification.

This invention relates to putty; and comprises a dough-like plastic masscontaining an inert mineral filler and a vehicle comprising suflicientwood oil to render the mass self-setting throughout, said puttyremaining plastic until use and setting to a firm mass after applicationwithout becoming brittle, friable and porous.

Putty as formerly made with linseed oil, has the disadvantage ofgradually becoming a brittle mass which cracks and falls away from thesurface to whichit has been ap-" plied. This is due largely to extremeoxidation of the linseed oil, which in itsfinal stages gives rise to theformation of brittle reslnous products. Linseed oil sets from withoutinwardly through oxidation, the degree of oxidation increasing with thetime of exposure to air until the oil ultimately becomes converted intoa resinous perishable mass. This oxidation is attended by and isdependent upon the production of porosity during the oxidation.

My invention involves 'a putty made by the use of Chinese wood oil orsimilar self setting oil,.such as Japanese wood oil, Hankow oil, Tungoil; and the like, in combination with an extending oil such as mineraloil, and preferably with a resinous body such as colophonium. \Vood oilon exposure to air sets by a molecular change, the nature of which isobscure, and not primarily by oxidation. This setting is not attendedwith the production of pores. O'n admixture with mineral oils thesetting is modified in some way and the compound. vehicle thus producedhas set-ting properties which, I find, make it particularly adapted forthe purposes of putty. The presence of rosin further advantageouslyaffects this setting. This oily material is used as a basis with whichis i corporated an inert filler, such as whiting (g; ener us to ive thenecessary plastlclty to the mass. uitable inert mineral powders arewhiting, ground lime-stone, mcludother mineral powder or thick' ingdolomitic lime-stone, marble dust, alumina, magnesium carbonate,barytes, kaolin, talc, ground soap-stone, and the like.

Whatever inert filler is employed, itshould be as finely powdered aspossible and substantially free of grit and metallic partioles. Theordinary uses of putty require that it be extremely fluent ,in orderthat itmay properly fill cracks and crevices to which it is applied. Thepresence of even a small amount of gritty or metallic particlesseriously affects the fluency of putty and may render the puttyvalueless.

I may also incorporate some oxidizable oils of a marked drying nature,including small proportions of linseed oil, or larger proportions ofsemi-drying oils, such as corn oil. Thus it becomes possible to producecompositions comprising a plurality of oils or drying oils includingwood oil.

An illustrative formula representing the composition which I nowconsider the preferred embodiment of this invention, is made by meltingtwenty-five parts of rosin and adding thereto sixty parts of mineral oilhaving a specific gravity of about .865, and fifteen parts of Chinesewood oil. When this oil stock is thoroughly blended by suitable heating,it may be mixed with five hundred parts of a mixture of twenty parts ofbarytes and eighty parts whiting. The mixture is thoroughly groundtogether, preferably by trituration in a chaser or edge runner.

The proportions given in the above formula may, of course, be variedmore or less to produce putties having different degrees of plasticity.

' The use of wood oil as well as rosin in this composition gives rise toa highly coherentputt-y and this peculiar cohesiveness makes thematerial unusually plastic and resistant to weathering action. Under theinfluence of light and exposure, and in pres- Wood oil thereforeproduces a 'puttyhaving properties differing from and reously and yetthe putty does not at any time adh'ere so firmly to the surfaces towhich it may be applied, but that it may be removed with littledifiiculty whenever desired by the application of a putty knife orwhiting.

a scraping tool.

Another illustrative formula comprises 20 parts of wood oil, parts ofparaflin oil, 20 parts of rosin and 420 parts of China clay. The rosinmay be omitted or replaced by the mineral oil.

A very desirable composition may be made by mixing 20 parts of wood oilwith 80 parts of mineral oil or equivalent oily material having littleor no real drying properties, and grinding this oil stock with 400 partsof a mineral thickener such as By varying the proportion of wood oil,varying setting speeds may be obtained. Unlike linseed oil and mineraloil mixtures, wood oil confers upon the putty highly desirableproperties, which render its adaptation to this art, of unusual value.

I have observed when using whiting as the filler or thickener that redoil, or com mercial oleic acid, or even pahnitic and stearic acids actas assistants to the wood oil, in securing a perfect blend andcoherency. It is possible that the formation of a lime soap occurs tosome extent in this case under the niechanical operation of grinding. Aformula containing red oil comprises Wood oil 10 parts. Red, oil 5Mineral oil Corn oil 2O \Vhiting 400 Eighteen parts by weight of.

a short time when two parts of wood oil are added and the compositionwell ground in an edge runner.

What I claim is:

1. A self-setting putty comprising an inert 'mh'erulent mineral fillerin predominating amount, said filler consisting mainly of whiting, andbeing substantially free of metallic particles and a vehicle comprisingwood oil in sufficient amount to cause the composition to beself-setting throughout.

2. As a. self-setting putty, a plastic, doughlike composition comprisingwood oil and an inert filler consisting mainly of whiting, and beingsubstantially free of metallic particles, said wood oil being in amountsullicient to cause the composition to be selfsetting.

3. As a self-setting putty, a plastic, doughlike composition comprisingwood oil, mineral oil and an inert filler comprising a substantialamount of whiting, and being substantially free of metallic particles,said wood oil being in amount sufficient to cause the composition to beself-setting.

4. A putty consisting of a plastic doughlike composition comprisingmineral oil, rosin, wood oil and a finely powdered mineral thickener.

5. A putt-y consisting of a plastic doughlike composition comprising asthe oil stock, about eighty (80) parts of mineral oil, and about twenty(20) parts of wood oil; and as the mineral thickener, about four hundred(400) parts of whiting.

(S. A putty consisting of plastic doughlike composition comprisingmineral oil, rosin, wood oil and a finely powdered min eral thickenercontaining whiting.

7. A putty consisting of a plastic doughlike composition comprisingmineral oil, a resinous body, wood oil and a finely powdered mineralthickener.

8. A putty consisting of a plastic doughlike composition comprising anon-drying oil, a plurality of oils having drying properties, includingwood oil, and a thickener, including Whiting.

In testimony whereof I have atlixed my signature in presence of twowitnesses.

CARLETON ELLIS.

Witnesses:

NATHANIEL L. FOSTER, H NRIETTA BERxwrrz.

